A subordinate clauseâalso called a dependent clauseâwill begin with a subordinate conjunction or a relative pronoun and will contain both a subject and a verb. This combination of words will not form a complete sentence.
If dermatomyositis occurs along with polymyositis, symptoms may also include: Skin rash. This can be either raised and smooth or scaly. It may appear on the forehead, the neck, shoulders, chest and back, forearms and lower legs, elbows and knees or the joints of the fingers, toes, wrists and ankles.
1 Polymyositis and dermatomyositis (PM/DM) are chronic inflammatory diseases of muscle. 2  Muscle weakness is the most common symptom of PM/DM. 3  The cause of PM/DM is unknown.his results in weakness that can be severe. Polymyositis is a chronic illness featuring progressive muscle weakness with periods of increased symptoms, called flares or relapses, and minimal or no symptoms, known as remissions.